﻿/*
 *
 * (c) Copyright Ascensio System Limited 2010-2023
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/


using System.IO;
using System.Security.Cryptography;

namespace ASC.Data.Encryption
{
    //https://stackoverflow.com/a/22072068

    internal sealed class CryptoStreamWrapper : CryptoStream
    {
        private readonly Stream underlyingStream;

        public CryptoStreamWrapper(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
            : base(stream, transform, mode)
        {
            underlyingStream = stream;
        }

        protected override void Dispose(bool disposing)
        {
            try
            {
                base.Dispose(disposing);
            }
            catch (CryptographicException)
            {
                if (disposing)
                {
                    underlyingStream.Dispose();
                }
            }
        }
    }
}
